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Published in: Annals of Surgical Oncology 8/2007

01-08-2007

Percutaneous Radiofrequency Ablation for Recurrent Hepatocellular Carcinoma After Hepatectomy: Long-term Results and Prognostic Factors

Authors: Dongil Choi, MD, Hyo K. Lim, MD, Hyunchul Rhim, MD, Young-sun Kim, MD, Byung Chul Yoo, MD, Seung Woon Paik, MD, Jae-Won Joh, MD, Cheol Keun Park, MD

Published in: Annals of Surgical Oncology | Issue 8/2007

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Abstract

Background

We evaluated the long-term survival results and safety of percutaneous radiofrequency ablation (RFA) for recurrent hepatocellular carcinoma (HCC) after hepatectomy, and assessed the prognostic factors that can influence its long-term therapeutic results.

Methods

One hundred and two patients, who had 119 recurrent HCC in their livers, underwent ultrasound-guided percutaneous RFA. All the patients had a history of hepatic resection as a first-line treatment modality for HCC. The mean diameter of the recurrent tumors was 2.0 cm (range, 0.8–5.0 cm). We evaluated the effectiveness rates, local tumor progression rates, survival rates, and complications. We also assessed the prognostic factors of the survival rates by using Cox proportional hazard models.

Results

The primary effectiveness rate was 93.3% (111 of 119). The cumulative rates of local tumor progression at 1, 3, and 5 years were 6.0, 8.6, and 11.9%, respectively. The cumulative survival rates at 1, 2, 3, 4, and 5 years were 93.9, 83.7, 65.7, 56.6, and 51.6%, respectively. Patients with a lower serum α-fetoprotein (AFP) level (≤100 μg/L) before RFA or with small resected tumors (≤5 cm) demonstrated better survival results (P < .05). There was only one major complication (liver abscess, 1.0% per treatment) during the follow-up period. There were no procedure-related deaths.

Conclusions

Percutaneous RFA is an effective and safe treatment modality for intrahepatic recurrent HCC after hepatectomy. Serum AFP level before RFA and resected tumor size were significant prognostic predictors of long-term survival.
Literature
2.
go back to reference Balsells J, Charco R, Lazaro JL, Murio E, Vargas V, Allende E, Margarite C. Resection of hepatocellular carcinoma in patients with cirrhosis. Br J Surg 1996; 83:758–761PubMedCrossRef Balsells J, Charco R, Lazaro JL, Murio E, Vargas V, Allende E, Margarite C. Resection of hepatocellular carcinoma in patients with cirrhosis. Br J Surg 1996; 83:758–761PubMedCrossRef
3.
go back to reference Shuto T, Kinoshita H, Hirohashi K, et al. Indications for, and effectiveness of, a second hepatic resection for recurrent hepatocellular carcinoma. Hepatogastroenterology 1996; 43:932–937PubMed Shuto T, Kinoshita H, Hirohashi K, et al. Indications for, and effectiveness of, a second hepatic resection for recurrent hepatocellular carcinoma. Hepatogastroenterology 1996; 43:932–937PubMed
4.
go back to reference Takenaka K, Kawahara N, Yamamoto K, et al. Results of 280 liver resections for hepatocellular carcinoma. Arch Surg 1996; 131:71–76PubMed Takenaka K, Kawahara N, Yamamoto K, et al. Results of 280 liver resections for hepatocellular carcinoma. Arch Surg 1996; 131:71–76PubMed
5.
go back to reference Sugimachi K, Maehara S, Tanaka S, Shimada M, Sugimachi K. Repeat hepatectomy is the most useful treatment for recurrent hepatocellular carcinoma. J Hepatobiliary Pancreat Surg 2001; 8:410–416PubMedCrossRef Sugimachi K, Maehara S, Tanaka S, Shimada M, Sugimachi K. Repeat hepatectomy is the most useful treatment for recurrent hepatocellular carcinoma. J Hepatobiliary Pancreat Surg 2001; 8:410–416PubMedCrossRef
6.
go back to reference Matsuda M, Fujii H, Kono H, Matsumoto Y. Surgical treatment of recurrent hepatocellular carcinoma based on the mode of recurrence: repeat hepatic resection or ablation are good choices for patients with recurrent multicentric cancer. J Hepatobiliary Pancreat Surg 2001; 8:353–359PubMedCrossRef Matsuda M, Fujii H, Kono H, Matsumoto Y. Surgical treatment of recurrent hepatocellular carcinoma based on the mode of recurrence: repeat hepatic resection or ablation are good choices for patients with recurrent multicentric cancer. J Hepatobiliary Pancreat Surg 2001; 8:353–359PubMedCrossRef
7.
go back to reference Suenaga M, Sugiura H, Kokuba Y, Uehara S, Kurumiya T. Repeated hepatic resection for recurrent hepatocellular carcinoma in 18 cases. Surgery 1994; 115:452–457PubMed Suenaga M, Sugiura H, Kokuba Y, Uehara S, Kurumiya T. Repeated hepatic resection for recurrent hepatocellular carcinoma in 18 cases. Surgery 1994; 115:452–457PubMed
8.
go back to reference Neeleman N, Andersson R. Repeat liver resection for recurrent liver cancer. Br J Surg 1996; 83:893–901PubMedCrossRef Neeleman N, Andersson R. Repeat liver resection for recurrent liver cancer. Br J Surg 1996; 83:893–901PubMedCrossRef
9.
go back to reference Capussotti L, Borgonovo G, Bouzari H, Smadja C, Grange D, Franco D. Results of major hepatectomy for large primary liver cancer in patients with cirrhosis. Br J Surg 1994; 81:427–431PubMedCrossRef Capussotti L, Borgonovo G, Bouzari H, Smadja C, Grange D, Franco D. Results of major hepatectomy for large primary liver cancer in patients with cirrhosis. Br J Surg 1994; 81:427–431PubMedCrossRef
10.
go back to reference Hu RH, Lee PH, Yu SC, et al. Surgical resection for recurrent hepatocellular carcinoma: prognosis and analysis of risk factors. Surgery 1996; 120:23–29PubMedCrossRef Hu RH, Lee PH, Yu SC, et al. Surgical resection for recurrent hepatocellular carcinoma: prognosis and analysis of risk factors. Surgery 1996; 120:23–29PubMedCrossRef
11.
go back to reference Shimada M, Takenaka K, Taguchi K, et al. Prognostic factors after repeat hepatectomy for recurrent hepatocellular carcinoma. Ann Surg 1998; 227:80–85PubMedCrossRef Shimada M, Takenaka K, Taguchi K, et al. Prognostic factors after repeat hepatectomy for recurrent hepatocellular carcinoma. Ann Surg 1998; 227:80–85PubMedCrossRef
12.
go back to reference Poon RT, Fan ST, Lo CM, Liu CL, Wong J. Intrahepatic recurrence after curative resection of hepatocellular carcinoma: long-term results of treatment and prognostic factors. Ann Surg 1999; 229:216–222PubMedCrossRef Poon RT, Fan ST, Lo CM, Liu CL, Wong J. Intrahepatic recurrence after curative resection of hepatocellular carcinoma: long-term results of treatment and prognostic factors. Ann Surg 1999; 229:216–222PubMedCrossRef
13.
go back to reference Takayasu K, Wakao F, Moriyama N, et al. Postresection recurrence of hepatocellular carcinoma treated by arterial embolization: analysis of prognostic factors. Hepatology 1992; 16:906–911PubMedCrossRef Takayasu K, Wakao F, Moriyama N, et al. Postresection recurrence of hepatocellular carcinoma treated by arterial embolization: analysis of prognostic factors. Hepatology 1992; 16:906–911PubMedCrossRef
14.
go back to reference Okazaki M, Yamasaki S, Ono H, et al. Chemoembolotherapy for recurrent hepatocellular carcinoma in the residual liver after hepatectomy. Hepatogastroenterology 1993; 40:320–323PubMed Okazaki M, Yamasaki S, Ono H, et al. Chemoembolotherapy for recurrent hepatocellular carcinoma in the residual liver after hepatectomy. Hepatogastroenterology 1993; 40:320–323PubMed
15.
go back to reference Shimada M, Takenaka K, Gion T, et al. Prognosis of recurrent hepatocellular carcinoma: a 10-year surgical experience in Japan. Gastroenterology 1996; 111:720–726PubMedCrossRef Shimada M, Takenaka K, Gion T, et al. Prognosis of recurrent hepatocellular carcinoma: a 10-year surgical experience in Japan. Gastroenterology 1996; 111:720–726PubMedCrossRef
16.
go back to reference Kainuma O, Asano T, Aoyama H, Shinohara Y. Recurrent hepatocellular carcinoma successfully treated with radiofrequency thermal ablation. J Hepatobiliary Pancreat Surg 1999; 6:190–194PubMedCrossRef Kainuma O, Asano T, Aoyama H, Shinohara Y. Recurrent hepatocellular carcinoma successfully treated with radiofrequency thermal ablation. J Hepatobiliary Pancreat Surg 1999; 6:190–194PubMedCrossRef
17.
go back to reference Nicoli N, Casaril A, Marchiori L, Mangiante G, Hasheminia AR. Treatment of recurrent hepatocellular carcinoma by radiofrequency thermal ablation. J Hepatobiliary Pancreat Surg 2001; 8:417–421PubMedCrossRef Nicoli N, Casaril A, Marchiori L, Mangiante G, Hasheminia AR. Treatment of recurrent hepatocellular carcinoma by radiofrequency thermal ablation. J Hepatobiliary Pancreat Surg 2001; 8:417–421PubMedCrossRef
18.
go back to reference Elias D, de Baere T, Smayra T, Ouellet JF, Roche A, Lasser P. Percutaneous radiofrequency thermoablation as an alternative to surgery for treatment of liver tumour recurrence after hepatectomy. Br J Surg 2002; 89:752–756PubMedCrossRef Elias D, de Baere T, Smayra T, Ouellet JF, Roche A, Lasser P. Percutaneous radiofrequency thermoablation as an alternative to surgery for treatment of liver tumour recurrence after hepatectomy. Br J Surg 2002; 89:752–756PubMedCrossRef
19.
go back to reference Choi D, Lim HK, Kim MJ, et al. Recurrent hepatocellular carcinoma: percutaneous radiofrequency ablation after hepatectomy. Radiology 2004; 230:135–141PubMedCrossRef Choi D, Lim HK, Kim MJ, et al. Recurrent hepatocellular carcinoma: percutaneous radiofrequency ablation after hepatectomy. Radiology 2004; 230:135–141PubMedCrossRef
20.
go back to reference Lu MD, Yin XY, Xie XY, et al. Percutaneous thermal ablation for recurrent hepatocellular carcinoma after hepatectomy. Br J Surg 2005; 92:1393–1398PubMedCrossRef Lu MD, Yin XY, Xie XY, et al. Percutaneous thermal ablation for recurrent hepatocellular carcinoma after hepatectomy. Br J Surg 2005; 92:1393–1398PubMedCrossRef
21.
go back to reference Yang W, Chen MH, Yin SS, et al. Radiofrequency ablation of recurrent hepatocellular carcinoma after hepatectomy: therapeutic efficacy on early- and late-phase recurrence. AJR Am J Roentgenol 2006; 186:S275–283PubMedCrossRef Yang W, Chen MH, Yin SS, et al. Radiofrequency ablation of recurrent hepatocellular carcinoma after hepatectomy: therapeutic efficacy on early- and late-phase recurrence. AJR Am J Roentgenol 2006; 186:S275–283PubMedCrossRef
22.
go back to reference Bruix J, Sherman M, Llovet JM, et al. Clinical management of hepatocellular carcinoma. Conclusions of the Barcelona-2000 EASL conference. European Association for the Study of the Liver. J Hepatol 2001; 35:421–430PubMedCrossRef Bruix J, Sherman M, Llovet JM, et al. Clinical management of hepatocellular carcinoma. Conclusions of the Barcelona-2000 EASL conference. European Association for the Study of the Liver. J Hepatol 2001; 35:421–430PubMedCrossRef
23.
go back to reference Goldberg SN, Grassi CJ, Cardella JF, et al. Image-guided tumor ablation: standardization of terminology and reporting criteria. Radiology 2005; 235:728–739PubMedCrossRef Goldberg SN, Grassi CJ, Cardella JF, et al. Image-guided tumor ablation: standardization of terminology and reporting criteria. Radiology 2005; 235:728–739PubMedCrossRef
24.
go back to reference Choi D, Lim HK, Kim SH, et al. Hepatocellular carcinoma treated with percutaneous radio-frequency ablation: usefulness of power Doppler US with a microbubble contrast agent in evaluating therapeutic response-preliminary results. Radiology 2000; 217:558–563PubMed Choi D, Lim HK, Kim SH, et al. Hepatocellular carcinoma treated with percutaneous radio-frequency ablation: usefulness of power Doppler US with a microbubble contrast agent in evaluating therapeutic response-preliminary results. Radiology 2000; 217:558–563PubMed
25.
go back to reference Choi D, Lim HK, Lee WJ, et al. Radiofrequency ablation of liver cancer: early evaluation of therapeutic response with contrast-enhanced ultrasonography. Korean J Radiol 2004; 5:185–198PubMedCrossRef Choi D, Lim HK, Lee WJ, et al. Radiofrequency ablation of liver cancer: early evaluation of therapeutic response with contrast-enhanced ultrasonography. Korean J Radiol 2004; 5:185–198PubMedCrossRef
26.
go back to reference Lim HK, Choi D, Lee WJ, et al. Hepatocellular carcinoma treated with percutaneous radio-frequency ablation: evaluation with follow-up multiphase helical CT. Radiology 2001; 221:447–454PubMedCrossRef Lim HK, Choi D, Lee WJ, et al. Hepatocellular carcinoma treated with percutaneous radio-frequency ablation: evaluation with follow-up multiphase helical CT. Radiology 2001; 221:447–454PubMedCrossRef
27.
go back to reference Nagasue N, Kohno H, Hayashi T, et al. Repeat hepatectomy for recurrent hepatocellular carcinoma. Br J Surg 1996; 83:127–131PubMedCrossRef Nagasue N, Kohno H, Hayashi T, et al. Repeat hepatectomy for recurrent hepatocellular carcinoma. Br J Surg 1996; 83:127–131PubMedCrossRef
28.
go back to reference Arii S, Teramoto K, Kawamura T, et al. Characteristics of recurrent hepatocellular carcinoma in Japan and our surgical experience. J Hepatobiliary Pancreat Surg 2001; 8:397–403PubMedCrossRef Arii S, Teramoto K, Kawamura T, et al. Characteristics of recurrent hepatocellular carcinoma in Japan and our surgical experience. J Hepatobiliary Pancreat Surg 2001; 8:397–403PubMedCrossRef
29.
go back to reference Poon RT, Fan ST, Tsang FH, Wong J. Locoregional therapies for hepatocellular carcinoma: a critical review from the surgeon’s perspective. Ann Surg 2002; 235:466–486PubMedCrossRef Poon RT, Fan ST, Tsang FH, Wong J. Locoregional therapies for hepatocellular carcinoma: a critical review from the surgeon’s perspective. Ann Surg 2002; 235:466–486PubMedCrossRef
30.
go back to reference Izzo F. Other thermal ablation techniques: microwave and interstitial laser ablation of liver tumors. Ann Surg Oncol 2003; 10:491–497PubMedCrossRef Izzo F. Other thermal ablation techniques: microwave and interstitial laser ablation of liver tumors. Ann Surg Oncol 2003; 10:491–497PubMedCrossRef
31.
go back to reference Shibata T, Iimuro Y, Yamamoto Y, et al. Small hepatocellular carcinoma: comparison of radio-frequency ablation and percutaneous microwave coagulation therapy. Radiology 2002; 223:331–337PubMedCrossRef Shibata T, Iimuro Y, Yamamoto Y, et al. Small hepatocellular carcinoma: comparison of radio-frequency ablation and percutaneous microwave coagulation therapy. Radiology 2002; 223:331–337PubMedCrossRef
32.
go back to reference Lencioni RA, Allgaier HP, Cioni D, et al. Small hepatocellular carcinoma in cirrhosis: randomized comparison of radio-frequency thermal ablation versus percutaneous ethanol injection. Radiology 2003; 228:235–240PubMedCrossRef Lencioni RA, Allgaier HP, Cioni D, et al. Small hepatocellular carcinoma in cirrhosis: randomized comparison of radio-frequency thermal ablation versus percutaneous ethanol injection. Radiology 2003; 228:235–240PubMedCrossRef
33.
go back to reference Lin SM, Lin CJ, Lin CC, Hsu CW, Chen YC. Radiofrequency ablation improves prognosis compared with ethanol injection for hepatocellular carcinoma ≤4 cm. Gastroenterology 2004; 127:1714–1723PubMedCrossRef Lin SM, Lin CJ, Lin CC, Hsu CW, Chen YC. Radiofrequency ablation improves prognosis compared with ethanol injection for hepatocellular carcinoma ≤4 cm. Gastroenterology 2004; 127:1714–1723PubMedCrossRef
34.
go back to reference Shiina S, Teratani T, Obi S, et al. A randomized controlled trial of radiofrequency ablation with ethanol injection for small hepatocellular carcinoma. Gastroenterology 2005; 129:122–130PubMedCrossRef Shiina S, Teratani T, Obi S, et al. A randomized controlled trial of radiofrequency ablation with ethanol injection for small hepatocellular carcinoma. Gastroenterology 2005; 129:122–130PubMedCrossRef
35.
go back to reference Lin SM, Lin CJ, Lin CC, Hsu CW, Chen YC. Randomised controlled trial comparing percutaneous radiofrequency thermal ablation, percutaneous ethanol injection, and percutaneous acetic acid injection to treat hepatocellular carcinoma of 3 cm or less. Gut 2005; 54:1151–1156PubMedCrossRef Lin SM, Lin CJ, Lin CC, Hsu CW, Chen YC. Randomised controlled trial comparing percutaneous radiofrequency thermal ablation, percutaneous ethanol injection, and percutaneous acetic acid injection to treat hepatocellular carcinoma of 3 cm or less. Gut 2005; 54:1151–1156PubMedCrossRef
36.
go back to reference Lencioni R, Cioni D, Crocetti L, et al. Early-stage hepatocellular carcinoma in patients with cirrhosis: long-term results of percutaneous image-guided radiofrequency ablation. Radiology 2005; 234:961–967PubMedCrossRef Lencioni R, Cioni D, Crocetti L, et al. Early-stage hepatocellular carcinoma in patients with cirrhosis: long-term results of percutaneous image-guided radiofrequency ablation. Radiology 2005; 234:961–967PubMedCrossRef
37.
go back to reference Tateishi R, Shiina S, Teratani T, et al. Percutaneous radiofrequency ablation for hepatocellular carcinoma. An analysis of 1000 cases. Cancer 2005; 103:1201–1209PubMedCrossRef Tateishi R, Shiina S, Teratani T, et al. Percutaneous radiofrequency ablation for hepatocellular carcinoma. An analysis of 1000 cases. Cancer 2005; 103:1201–1209PubMedCrossRef
38.
go back to reference Koike Y, Shiratori Y, Sato S, et al. Risk factors for recurring hepatocellular carcinoma differ according to infected hepatitis virus––an analysis of 236 consecutive patients with a single lesion. Hepatology 2000; 32:1216–1223PubMedCrossRef Koike Y, Shiratori Y, Sato S, et al. Risk factors for recurring hepatocellular carcinoma differ according to infected hepatitis virus––an analysis of 236 consecutive patients with a single lesion. Hepatology 2000; 32:1216–1223PubMedCrossRef
39.
go back to reference Hanazaki K, Kajikawa S, Koide N, Adachi W, Amano J. Prognostic factors after hepatic resection for hepatocellular carcinoma with hepatitis C viral infection: univariate and multivariate analysis. Am J Gastroenterol 2001; 96:1243–1250PubMedCrossRef Hanazaki K, Kajikawa S, Koide N, Adachi W, Amano J. Prognostic factors after hepatic resection for hepatocellular carcinoma with hepatitis C viral infection: univariate and multivariate analysis. Am J Gastroenterol 2001; 96:1243–1250PubMedCrossRef
40.
go back to reference Zhou XD, Tang ZY, Yang BH, et al. Experience of 1000 patients who underwent hepatectomy for small hepatocellular carcinoma. Cancer 2001; 91:1479–1486PubMedCrossRef Zhou XD, Tang ZY, Yang BH, et al. Experience of 1000 patients who underwent hepatectomy for small hepatocellular carcinoma. Cancer 2001; 91:1479–1486PubMedCrossRef
41.
go back to reference Wayne JD, Lauwers GY, Ikai I, et al. Preoperative predictors of survival after resection of small hepatocellular carcinomas. Ann Surg 2002; 235:722–730PubMedCrossRef Wayne JD, Lauwers GY, Ikai I, et al. Preoperative predictors of survival after resection of small hepatocellular carcinomas. Ann Surg 2002; 235:722–730PubMedCrossRef
42.
go back to reference Yanaga K. Current status of hepatic resection for hepatocellular carcinoma. J Gastroenterol 2004; 39:919–926PubMedCrossRef Yanaga K. Current status of hepatic resection for hepatocellular carcinoma. J Gastroenterol 2004; 39:919–926PubMedCrossRef
43.
go back to reference Livraghi T, Solbiati L, Meloni MF, Gazelle GS, Halpern EF, Goldberg SN. Treatment of focal liver tumors with percutaneous radio-frequency ablation: complications encountered in a multicenter study. Radiology 2003; 226:441–451PubMedCrossRef Livraghi T, Solbiati L, Meloni MF, Gazelle GS, Halpern EF, Goldberg SN. Treatment of focal liver tumors with percutaneous radio-frequency ablation: complications encountered in a multicenter study. Radiology 2003; 226:441–451PubMedCrossRef
44.
go back to reference Rhim H, Yoon KH, Lee JM, et al. Major complications after radio-frequency thermal ablation of hepatic tumors: spectrum of imaging findings. Radiographics 2003; 23:123–134PubMedCrossRef Rhim H, Yoon KH, Lee JM, et al. Major complications after radio-frequency thermal ablation of hepatic tumors: spectrum of imaging findings. Radiographics 2003; 23:123–134PubMedCrossRef
45.
go back to reference Choi D, Lim HK, Kim MJ, et al. Therapeutic efficacy and safety of percutaneous radiofrequency ablation of hepatocellular carcinoma abutting the gastrointestinal tract. AJR: Am J Roentgenol 2004; 183:1417–1424 Choi D, Lim HK, Kim MJ, et al. Therapeutic efficacy and safety of percutaneous radiofrequency ablation of hepatocellular carcinoma abutting the gastrointestinal tract. AJR: Am J Roentgenol 2004; 183:1417–1424
46.
go back to reference Choi D, Lim HK, Kim MJ, et al. Liver abscess after percutaneous radiofrequency ablation for hepatocellular carcinomas: frequency and risk factors. AJR: Am J Roentgenol 2005; 184:1860–1867 Choi D, Lim HK, Kim MJ, et al. Liver abscess after percutaneous radiofrequency ablation for hepatocellular carcinomas: frequency and risk factors. AJR: Am J Roentgenol 2005; 184:1860–1867
47.
go back to reference Lencioni R, Cioni D, Crocetti L, et al. Early-stage hepatocellular carcinoma in patients with cirrhosis: long-term results of percutaneous image-guided radiofrequency ablation. Radiology 2005; 234:961–967PubMedCrossRef Lencioni R, Cioni D, Crocetti L, et al. Early-stage hepatocellular carcinoma in patients with cirrhosis: long-term results of percutaneous image-guided radiofrequency ablation. Radiology 2005; 234:961–967PubMedCrossRef
48.
go back to reference Shibata T, Maetani Y, Isoda H, Hiraoka M. Radiofrequency ablation for small hepatocellular carcinoma: prospective comparison of internally cooled electrode and expandable electrode. Radiology 2006; 238:346–353PubMedCrossRef Shibata T, Maetani Y, Isoda H, Hiraoka M. Radiofrequency ablation for small hepatocellular carcinoma: prospective comparison of internally cooled electrode and expandable electrode. Radiology 2006; 238:346–353PubMedCrossRef
Metadata
Title
Percutaneous Radiofrequency Ablation for Recurrent Hepatocellular Carcinoma After Hepatectomy: Long-term Results and Prognostic Factors
Authors
Dongil Choi, MD
Hyo K. Lim, MD
Hyunchul Rhim, MD
Young-sun Kim, MD
Byung Chul Yoo, MD
Seung Woon Paik, MD
Jae-Won Joh, MD
Cheol Keun Park, MD
Publication date
01-08-2007
Publisher
Springer-Verlag
Published in
Annals of Surgical Oncology / Issue 8/2007
Print ISSN: 1068-9265
Electronic ISSN: 1534-4681
DOI
https://doi.org/10.1245/s10434-006-9220-8

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